I am trying to understand the circuit shown above, with one JFET transistor at left side acting a current buffer and right hand side with a op amp.
this is a low noise transimpedance circuit, which I think I can use or modified this circuit and used in my design, sensitive to noise and a current signal needed to be amplified to voltage signal in the end.
the problem is that I am not quit sure how to analyse the circuit, should I use small-signal analysis? Do I need to derive the transfer function?
why the Bandwidth is 2MHZ and where is the cut off frequency? and is the system stable or not?
Can someone give me a clue or answer, please?
To test out your circuit I would recommend you use circuit simulation software like some version of SPICE. If you are looking at the circuit you show which uses an LTC amplifier, LTSpice would be the best…